schroeter



No. 625,067." Patented May I6, |899.

J. F. SCHRETEH.

CREAM SEPAHATOR. (Application mea nec. 29, 1897.)

(No Model.)

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7a4 iter-11 THE NORRIS PETRS C0, PNOTD-LITHQ.. N ASHNGTON. D. C.

NrTED STATES PATENT OFFICE.

' CREAM-SEPARATOR.

sPEcIFicATIoN forming pere ef Lettere Patent No. 625,067, dated Mair i6, 189e.

Application led December 29, 1897. Serial No. 664.469. (No modell) l To @ZZ zu'wm t may concern,.-

i Be it known that I, JOHAN FREDERIK SCHROETER, manufacturer, residing at Vod- -rofvej ll, Copenhagen, Denmark, have invented certain new and useful Improvements in Separators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the saine.

The invention has for its object a centrifugal separator provided with an inner guiding arrangement which forces the liuid to be separated to pass a way that is longer, or even several times longer, than the height of the separator-drum, under which passage the iiuid is separated in itsparticles of different specific weight, which particles are divided into lays of suoli thickness that they with certainty can be discharged through their respective outlets.

In the accompanying drawings, Figure lis a vertical sectional view of a centrifugal separator provided with the new guiding arrangement. Fig. 2 is a horizontal sectional View after the line p, Fig. 1. Fig. 3 is a horizontal sectional view after the line y, Fig. l.V Fig. 4 is ahorizontal sectional view after aline between the linesp and y, Fig. l. Fig. 5 shows the separator seen from above, the cover removed.

The separator-drum d is provided with a cover o/,which can be removed when the guiding arrangement has to be taken out for cleaning `purposes or the like. The cover is preferably fastened to the drum by screwing it on screw-threads g externally on the top of the drum. Between the cover and the upper edge of the drum is placed a tightening-ring w. The guiding arrangement consists of cells or pipes of a suitable number and shape,which cells or pipes are situated in close proximity to each other and to the inner wall of the drum. In the example shown there are three of such cells or pipes A B C, each of which is formed of the two side walls n n, an outer wall e' in close proximity to the inner wall of the drum, and an inner wall c. Within each of these cells or pipes A B C is placed an inner pipe, respectively, D E F, each of which is formed of two side walls m m, an outer wall 0, and an inner wall r', which latter is situated in ,close proximity to the inner wall c of the corresponding cell A, B, or C, while one or both ofthe side walls m are situated in some distance from the walls n of the outer cells in such a manner that at least one side channel, respectively, Gl-II, is formed between the inner pipe and its corresponding outer cell or pipe. The inner pipes D -E F are closed at the top, or the whole guiding arrangement can be closed by means of a cover c2, Figs. l and 5, in which are inner openings and outer openings s. At the bottom the pipes can either be open or closed-in the last case by pressing against a disk w', placed at the bottom of the drum. If the pipes are closed below, the inner pipes are near their bottom provided with openings r for the lighter and r2 r3 for the heavier parts of the fluid. (See Figs. l and 3.)

The coterminous inner walls c of the outer cells or pipes inclose a tube-shaped central .to the bottom ofthe central chamber K in order to ascend along the walls of this central room and, through the openings r, to pass into the inner pipes D, E, and F. The fluid now passes down these inner pipes and is at the same time separated, so that the lighter parts of the iiuid, through the openings r', pass into the corresponding side channel G, I-I, or I, while the heavier parts, through the openin gs r2 r3, pass into rthat part of the corresponding outer pipe or cell A, B, or C which is nearest to the periphery of the drum. While the separated fluid is passing the'outer cells or pipes A B C the separation becomes more intense, as the heavier parts, which through fr have passed out into the side channel, rush toward the periphery, While the lighter parts, which through r2 and r3 have followed the heavier parts toward the periphery, are forced toward the inner periphery of the fluid-ring through the side channels. At last the heavier parts pass through the openings s of the cover c2 and are discharged through the pipe e, while the lighter ones are led away through l'OO the Openings and the pipe z in the outer cover.

The openings r', arranged at the bottom of the inner pipes, might, of course, just as well openings is increased, so that the duration of the separation thus can be regulated.

Having now particularly described, and ascertained the-nature of my said invention and in what manner the same is to be performed, I declare that what I claim is- A centrifugal creamer comprising a main receptacle adapted to be rotated, a central tubular compartment K located therein and formed by the curved walls A, B and C adapted to receive the fluid to be separated and having outlet-openings r, a plurality of outer compartments each extending from the inner Wall of the main receptacle to the outer Wall of the compartment K and having radiallyextending side walls, an inner compartment within each outer compartment located in proximity to the inner wall thereof and also in proximity to one side wall whereby an outer and a side channel are formed between each inner and outer compartment, said inner compartments .having passages leading to said outerand side channels for eecting the separation of the fluid, and separate discharge= openings at the upper end of the main receptacle for the separated liuid, substantially as described.

In testimony whereof I aflix .my signature in presence of two witnesses.

J.' F. SCHROETER.

Vitnesses:

THEoDoR HoLM, E. HoLsT. 

